Question Cannot use for loop when AddObservation()

I found a weird behavior when I tried to add observations using a for loop or foreach loop, for example

Code (CSharp):

1. foreach(var data in list_float){
2.     sensor.AddObservation(data);
3. }

I will get an error says "sensor size must match". But the number of floats in my list does match my sensor's size. However, if I add observation one by one like this:

Code (CSharp):

1. sensor.AddObservation(list_float[0]);
2. sensor.AddObservation(list_float[1]);
3. sensor.AddObservation(list_float[2]);
4. ...

Then everything works fine.
I'm not sure if this is a bug, or I did something wrong.

 

Did you double-check list_float is the correct size? Btw, I think you can add IEnumerables directly, try sensor.AddObservation(list_float)

 

Thanks for the reply.
I tried foreach again and somehow this time it worked. So my guess is there was a mistake in my code elsewhere, when unity reach that broken code, it stops executing the remaining part of the code, which causes my list not get initialized (and therefore get an empty list).

 

Glad you got it working.

It's hard to tell without the exact text of the error, but "sensor size must match" was probably due to Agents with the same Behavior Name and different observation sizes.